Internet Engineering Task Force (IETF) S. Krishnan
Request for Comments: 6705 Ericsson
Category: Standards Track R. Koodli
ISSN: 2070-1721 Cisco Systems
P. Loureiro
NEC
Q. Wu
Huawei
A. Dutta
NIKSUN
September 2012
Localized Routing for Proxy Mobile IPv6
Abstract
Proxy Mobile IPv6 (PMIPv6) is a network based mobility management
protocol that enables IP mobility for a host without requiring its
participation in any mobility-related signaling. PMIPv6 requires all
communications to go through the local mobility anchor. As this can
be suboptimal, Localized Routing (LR) allows Mobile Nodes (MNs)
attached to the same or different Mobile Access Gateways (MAGs) to
route traffic by using localized forwarding or a direct tunnel
between the gateways. This document proposes initiation,
utilization, and termination mechanisms for localized routing between
mobile access gateways within a proxy mobile IPv6 domain. It defines
two new signaling messages, Localized Routing Initiation (LRI) and
Local Routing Acknowledgment (LRA), that are used to realize this
mechanism.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force
(IETF). It represents the consensus of the IETF community. It has
received public review and has been approved for publication by
the Internet Engineering Steering Group (IESG). Further
information on Internet Standards is available in Section 2 of
RFC 5741.
Information about the current status of this document, any
errata, and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc6705.
Krishnan, et al. Standards Track [Page 1]RFC 6705 PMIPv6 Localized Routing September 2012Copyright Notice
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Table of Contents
1. Introduction ....................................................3
2. Conventions Used in This Document ...............................3
3. Initiation of Localized Routing .................................3
3.1. MAG Behavior ...............................................4
3.2. LMA Behavior ...............................................4
4. Teardown of Localized Routing ...................................4
5. Scenario A11: Two MNs Attached to the Same MAG and LMA ..........4
5.1. Handover Considerations ....................................6
6. Scenario A21: Two MNs Attached to Different MAGs but the
Same LMA ........................................................7
6.1. Handover Considerations ....................................9
6.2. Tunneling between the MAGs .................................9
7. Scenario A12: Two MNs Attached to the Same MAG with
Different LMAs .................................................10
7.1. Handover Considerations ...................................12
8. Scenario A22: Two MNs Attached to Different MAGs with
Different LMAs .................................................13
9. IPv4 Support in Localized Routing ..............................13
10. Message Formats ...............................................13
10.1. Localized Routing Initiation (LRI) .......................14
10.2. Localized Routing Acknowledgment (LRA) ...................15
11. New Mobility Option ...........................................16
11.1. MAG IPv6 Address .........................................16
12. Configuration Variables .......................................17
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